Induced superradiance in activated crystals

Malikov, R. F.; Trifonov, E. D.

doi:10.1016/0030-4018(84)90076-2

Cited by 18 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The semiclassical analog of this initial state consists in setting small random values of the amplitudes of high-frequency coherences 5 31 (0) and 5 32 (0) with certain correlation properties [57]. Another variant of the SR initiation involves applying a short (on the SR scale) small-area pulse that produces the deterministic and identical values of the amplitudes of high-frequency coherences 5 31 (0) and 5 32 (0) at each emitter, which exceed their quantum fluctuations (so-called triggered or induced SR [58,59]). We will henceforth consider the second scheme of SR excitation.…”

Section: P N D G D G Dmentioning

confidence: 99%

Cooperative emission from an ensemble of three-level Λ radiators in a cavity: An insight from the viewpoint of dynamics of nonlinear systems

Рыжов

Vasil'ev

Kosova

et al. 2017

J. Exp. Theor. Phys.

View full text Add to dashboard Cite

Cooperative radiation emitted by an ensemble of three-level optical systems with a doublet in the ground state (Λ scheme), which is placed into a cyclic cavity, is studied theoretically. In contrast to the twolevel model of emitters, this process with such a configuration of operating transitions may occur without population inversion in the whole, if the doublet is prepared at the initial instant in a superposition (coherent) state. In the ideal case of a Hamilton system, in which the cavity losses and relaxation in the radiator ensemble are disregarded, the conservation laws are derived, which allow a substantial reduction of the dimension of the phase space of the model (ℝ 11 → ℝ 5 ) and the application of methods of dynamics of nonlinear systems for analyzing the three-level superradiance under these conditions. The possibility of different (both quasiperiodic and chaotic) scenarios of the three-level superradiance is demonstrated on the basis of Poincaré's mappings. Global bifurcation of the system upon a transition from the conventional superradiance regime to inversionless one is revealed. The effects of cavity losses, as well as homogeneous and inhomogeneous broadening in the system of radiators on the regularities found are also discussed.

show abstract

Section: P N D G D G Dmentioning

confidence: 99%

Cooperative emission from an ensemble of three-level Λ radiators in a cavity: An insight from the viewpoint of dynamics of nonlinear systems

Рыжов

Vasil'ev

Kosova

et al. 2017

J. Exp. Theor. Phys.

View full text Add to dashboard Cite

show abstract

“…In order to trigger the emission process, we set a fixed (not-fluctuating) value for the initial electric polarization in the operating channels, R 31 (0) = R 21 (0) = R 0 . This corresponds to triggering the SR by an ultrashort external pulse of a small area, with a duration T p < min{2π/ω 32 , τ −1 R } [18,46,47]. Equations ( 8)-( 13) are written within the original basis of states |1 , |2 and |3 .…”

Section: Model and Truncated Equationsmentioning

confidence: 99%

Superradiance from an ultrathin film of three-levelV-type atoms: interplay between splitting, quantum coherence and local-field effects

Малышев

Carreño

Antón

et al. 2003

J. Opt. B: Quantum Semiclass. Opt.

View full text Add to dashboard Cite

Superradiance from an ultrathin film of three-level V -type atoms: Interplay between splitting, quantum coherence and local-field effects Abstract.We carry out a theoretical study of the collective spontaneous emission (superradiance) from an ultrathin film comprised of three-level atoms with Vconfiguration of the operating transitions. As the thickness of the system is small compared to the emission wavelength inside the film, the local-field correction to the averaged Maxwell field is relevant. We show that the interplay between the lowfrequency quantum coherence within the subspace of the upper doublet states and the local-field correction may drastically affect the branching ratio of the operating transitions. This effect may be used for controlling the emission process by varying the doublet splitting and the amount of low-frequency coherence.

show abstract

“…Considering our case with three-level Λ-emitters, this restriction is not mandatory. Superradiance is possible even when the initial upper-level population is less than the total population of the lower doublet-SR without population inversion (Carlson et al 1980;Harris 1989;Kocharovskaya 1997;Kocharovskaya, Khanin 1988;Kocharovskaya, Mandel 1990;Malikov, Trifonov 1984;Malyshev et al 1998;2000;Ryzhov et al 2012;2017;Scully 1992;Yuan, Svidzinsky 2012;Zaitsev et al 1999). The essence of the effect is as follows.…”

Section: Introductionmentioning

confidence: 99%